JP3539416B2 - Route search apparatus and method, route search system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a route search device and method suitable for use in a navigation system that searches for and guides a travel route of a vehicle, and a route search system.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a navigation device that searches for an optimal route for vehicle traveling and guides vehicle traveling from a current position of the vehicle recognized using a signal from a GPS satellite and a target position input by a user. I have.
[0003]
Such a conventional navigation device guides an optimal route from the viewpoint of fuel consumption when a vehicle travels from a starting point, which is the current position of the vehicle, to an arrival point, which is the destination position, when searching for an optimal route. There is something to do.
[0004]
Further, as a conventional navigation apparatus, there is an apparatus that controls the operation of a vehicle to reduce exhaust gas emitted from the vehicle by using road information included in map data used for route guidance.
[0005]
[Problems to be solved by the invention]
However, the conventional navigation apparatus aims to reduce the fuel consumption of the vehicle when searching for a travel route, but because the relationship between the fuel consumption rate and the exhaust gas is not simply proportional, the exhaust gas It was not made to reduce only the specific components therein.
[0006]
Further, as a conventional navigation device, there is a device that controls the operation of a vehicle based on road information to reduce exhaust gas, but it has not been possible to provide an optimal route to reduce only a specific component in the exhaust gas. .
[0007]
Therefore, the present invention has been proposed in view of the above-described circumstances, and provides a route search device capable of searching for an optimal route for reducing the amount of exhaust gas of a specific exhaust gas component emitted from a vehicle. A method and a route search system are provided.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, a route search device according to claim 1 includes an information acquisition unit that acquires current position information and destination information of a vehicle, and a current position information indicated by the current position information acquired by the information acquisition unit. Route search means for searching for a travel route for arriving from the position to the destination indicated by the destination information, and exhaust gas of a predetermined component emitted from the vehicle when traveling on the travel route searched by the route search means An exhaust gas amount estimating means for estimating the amount and calculating an estimated exhaust gas amount, and a path for controlling the route searching means so as to search for a traveling route on which the estimated exhaust gas amount calculated by the exhaust gas amount estimating means is reduced. Search control means.
[0009]
The route search device according to claim 2 is the route search device according to claim 1, wherein the exhaust gas amount estimating means is one of road slope information, road shape information, and road type information included in the map data. The method is characterized in that an estimated exhaust gas amount is calculated using road information.
[0010]
The route search device according to claim 3 is the route search device according to claim 1, further comprising: vehicle information acquisition means for acquiring vehicle information on the vehicle, wherein the exhaust gas amount estimating means includes the vehicle information acquisition means. Calculating the estimated amount of exhaust gas using the vehicle information acquired by the method.
[0011]
The route search device according to claim 4 is the route search device according to claim 3, wherein the exhaust gas amount estimating means calculates an estimated exhaust gas amount using at least a vehicle-mounted weight as the vehicle information. And
[0012]
The route search device according to claim 5 is the route search device according to claim 1, further comprising environment information acquisition means for acquiring environment information on an environment around the vehicle, wherein the exhaust gas amount estimation means includes: An estimated exhaust gas amount is calculated using the environmental information acquired by the information acquiring means.
[0013]
The route search device according to claim 6 is the route search device according to claim 5, wherein the exhaust gas amount estimating means calculates an estimated exhaust gas amount using at least an outside air temperature as the environmental information. And
[0014]
The route search device according to claim 7 is the route search device according to claim 5, wherein the exhaust gas amount estimating means calculates the estimated exhaust gas amount using at least traffic jam information obtained from outside as the environmental information. It is characterized by doing.
[0015]
The route search device according to claim 8 is the route search device according to claim 1, further comprising a driving pattern storage unit that stores driving patterns of the vehicle classified according to road characteristics, The means calculates the estimated exhaust gas amount according to the operation pattern stored in the operation pattern storage means.
[0016]
The route search device according to claim 9 is the route search device according to claim 1, further comprising history storage means for storing a history of the actual exhaust gas amount actually emitted from the vehicle, and The means calculates the estimated exhaust gas amount using the history of the actual exhaust gas amount stored in the history storage means.
[0017]
The route search device according to claim 10 is the route search device according to claim 1, wherein at least display means for displaying the travel route searched by the route search means and calculation by the exhaust gas amount estimation means are performed. A display control means for controlling the display means so as to distinguish and display the display form of the travel route according to the estimated exhaust gas amount is further provided.
[0018]
The route searching device according to claim 11 is the route searching device according to claim 10, wherein the exhaust gas sensor measures an actual exhaust gas amount discharged from the vehicle, and stores the actual exhaust gas amount measured by the exhaust gas sensor. Exhaust gas amount storage means, display means for displaying at least the travel route searched by the route search means, and display form of the travel route according to the actual exhaust gas amount stored in the exhaust gas amount storage means. And a display control means for controlling the display means so as to distinguish the display.
[0019]
According to a twelfth aspect of the present invention, there is provided the route searching apparatus according to the first aspect, wherein a display means for displaying various information, each traveling point on the traveling route searched by the route searching means, A display control means for controlling the display means so as to display a graph in association with the estimated exhaust gas amount calculated by the gas amount estimating means is further provided.
[0020]
The route search device according to claim 13 is the route search device according to claim 1, wherein the exhaust gas sensor that measures an actual exhaust gas amount discharged from the vehicle and the actual exhaust gas amount that is measured by the exhaust gas sensor are stored. Exhaust gas amount storage means, display means for displaying various information, each traveling point on the traveling route searched by the route search means, and the actual exhaust gas amount stored in the exhaust gas amount storage means. Display control means for controlling the display means so as to display a graph in association with the display means.
[0021]
The route search device according to claim 14 is the route search device according to claim 1, wherein the exhaust gas sensor measures an actual amount of exhaust gas discharged from the vehicle, and an information storage device communicable with a plurality of vehicles. Communication means for transmitting an actual exhaust gas amount measured by the exhaust gas sensor and information indicating a point at which the actual exhaust gas amount is measured.
[0022]
The route search device according to claim 15 is the route search device according to claim 14, wherein the exhaust gas amount estimating unit uses an actual exhaust gas amount accumulated in the information storage device acquired by the communication unit. And calculating the estimated exhaust gas amount.
[0023]
In order to solve the above-described problem, the route searching method according to claim 16 includes a first step of acquiring a current position and a destination of the vehicle, and a second step of at least searching for a road near the current position and the destination. A third step of estimating an exhaust gas amount of a predetermined component emitted from the vehicle when the vehicle travels on the road searched in the second step to calculate an estimated exhaust gas amount, and an estimation searched in the third step. And a fourth step of searching for a traveling route that reduces the amount of exhaust gas.
[0024]
The route search method according to claim 17 is the route search method according to claim 16, wherein in the second step, a road near a current position and a destination is searched for, and road gradient information, road shape information, At least one of the type information is obtained, and in the third step, an estimated exhaust gas amount is calculated using the obtained information.
[0025]
The route searching method according to claim 18 is the route searching method according to claim 16, wherein the step of acquiring vehicle driving operation information by the vehicle driver and classifying each road feature based on the vehicle driving operation information. And acquiring a driving pattern of the vehicle. The third step is to calculate an estimated exhaust gas amount according to the driving pattern.
[0026]
The route search method according to claim 19 is the route search method according to claim 16, wherein the step of measuring an actual amount of exhaust gas emitted from the vehicle when the vehicle is running; Displaying the travel route in a different form according to the amount.
[0027]
The route searching method according to claim 20 is the route searching method according to claim 16, wherein, after the fourth step, each traveling point on the traveling route and the estimated exhaust gas amount calculated in the third step And displaying a graph in association with
[0028]
The route searching method according to claim 21 is the route searching method according to claim 16, wherein the step of measuring an actual amount of exhaust gas emitted from the vehicle when the vehicle is running; The method further comprises the step of displaying each traveling point on the traveling route searched in the above and the actual exhaust gas amount in a graph in association with each other.
[0029]
In order to solve the above-described problem, a route search system according to claim 22 includes a route search device mounted on a vehicle and a route management device connected to a plurality of route search devices via a communication line. In the search system, vehicle information, travel route information, and actual exhaust gas amount information emitted when traveling along the travel route are received from a plurality of route search devices, and the vehicle information, travel route information, and actual exhaust gas amount are received. An information management device that stores a database in which information is associated with the vehicle, and receives travel route information and actual exhaust gas amount information corresponding to vehicle information corresponding to the vehicle from the information management device, and receives the received travel route information and actual exhaust gas. Estimating the amount of exhaust gas of a predetermined component emitted from the vehicle when traveling on the traveling route from the current position to the destination using the amount information and the estimated exhaust gas amount Calculated, characterized in that it comprises a route searching device for searching for a travel route estimated estimated exhaust gas amount is reduced.
[0030]
The route search system according to claim 23 is the route search system according to claim 22, wherein the vehicle information is information indicating a vehicle rank, and the information management device is a vehicle related to a vehicle having the same rank. A database is stored in which information is associated with a plurality of travel route information and actual exhaust gas amount information received from a plurality of the route searching devices mounted on vehicles of the same rank, and a plurality of travel route information and actual emission The information based on the gas amount information is transmitted to the route searching device, and the route searching device presents information based on a plurality of traveling route information and actual exhaust gas amount information to a vehicle driver.
[0031]
【The invention's effect】
According to the route search device according to the first aspect, the exhaust gas amount estimating means calculates the estimated exhaust gas amount of the exhaust gas of the predetermined component emitted from the vehicle when traveling on the traveling route, so that the exhaust gas is emitted from the vehicle. It is possible to search for an optimal traveling route for reducing the amount of exhaust gas.
[0032]
According to the route search device of the second aspect, the exhaust gas amount estimating means calculates the estimated exhaust gas amount using any one of the road gradient information, the road shape information, and the road type information included in the map data. Therefore, it is possible to calculate the estimated amount of exhaust gas by using the fact that the amount of exhaust gas varies depending on the road gradient, road shape, and road type, and to improve the accuracy of searching for the optimal travel route to reduce the amount of exhaust gas. Can be improved.
[0033]
According to the route search device of the third aspect, the estimated exhaust gas amount is calculated by using the vehicle information by the exhaust gas amount estimating means, so that the estimated exhaust gas amount is calculated by utilizing the fact that the exhaust gas amount differs depending on the vehicle. It is possible to improve the accuracy of searching for an optimal traveling route for reducing the amount of exhaust gas.
[0034]
According to the route search device of the fourth aspect, since the estimated exhaust gas amount is calculated by the exhaust gas amount estimating means using the vehicle weight, the estimated exhaust gas amount is calculated using the fact that the exhaust gas amount varies depending on the vehicle weight. The calculation can be performed, and the accuracy of searching for an optimal traveling route for reducing the amount of exhaust gas can be improved.
[0035]
According to the route search device of the fifth aspect, the estimated exhaust gas amount is calculated by using the environmental information by the exhaust gas amount estimating means, so that the estimated exhaust gas amount is calculated by utilizing the fact that the exhaust gas amount differs depending on the environment. It is possible to improve the accuracy of searching for an optimal traveling route for reducing the amount of exhaust gas.
[0036]
According to the route search device of the sixth aspect, the estimated exhaust gas amount is calculated using the outside air temperature by the exhaust gas amount estimating means. The calculation can be performed, and the accuracy of searching for an optimal traveling route for reducing the amount of exhaust gas can be improved.
[0037]
According to the route search device of the present invention, since the estimated exhaust gas amount is calculated by the exhaust gas amount estimating means using the traffic congestion information, the estimated exhaust gas amount is calculated by utilizing the fact that the exhaust gas amount differs due to the occurrence of the traffic congestion. The amount of gas can be calculated, and the accuracy of searching for the optimal traveling route for reducing the amount of exhaust gas can be improved.
[0038]
According to the route search device of the eighth aspect, the estimated exhaust gas amount is calculated by the exhaust gas amount estimating means in accordance with the operation pattern. The calculation can be performed, and the accuracy of searching for an optimal traveling route for reducing the amount of exhaust gas can be improved. Further, according to the route searching apparatus of the eighth aspect, different driving patterns are stored for each vehicle driver to calculate the estimated exhaust gas amount, so that it is possible to further improve the accuracy of searching for an optimal driving route. it can.
[0039]
According to the route search device of the ninth aspect, the estimated exhaust gas amount is calculated by the exhaust gas amount estimating means using the history of the actual exhaust gas amount stored in the history storage means, so that the actually emitted exhaust gas is calculated. The estimated exhaust gas amount can be calculated with reference to the amount, and the accuracy of searching for an optimal traveling route for reducing the exhaust gas amount can be improved.
[0040]
According to the route search device of the tenth aspect, the display form of the traveling route is displayed in a distinguished manner in accordance with the estimated exhaust gas amount calculated by the exhaust gas amount estimating means. It is possible to indicate to the vehicle driver in advance whether the amount increases.
[0041]
According to the route searching device of the eleventh aspect, since the display form of the travel route is distinguished and displayed in accordance with the actual exhaust gas amount, the vehicle operation determines which road section of the travel route emits a large amount of exhaust gas. Can be presented to others.
[0042]
According to the route search device of the twelfth aspect, since each travel point on the travel route and the estimated exhaust gas amount are displayed in a graph in association with each other, it is possible to determine in advance which road section of the travel route the exhaust gas amount increases. It can be accurately presented to the vehicle driver.
[0043]
According to the route search device of the thirteenth aspect, since each traveling point on the traveling route and the actual exhaust gas amount are displayed in a graph in association with each other, which road section of the traveling route emits a large amount of exhaust gas? Can be accurately presented to the vehicle driver.
[0044]
According to the route search device of the fourteenth aspect, since the actual exhaust gas amount and the information indicating the point at which the actual exhaust gas amount is measured are transmitted to the information storage device, the information storage device side includes a plurality of route search devices. The relationship between the road section and the actual exhaust gas amount received from the vehicle can be stored and transmitted to the route search device.
[0045]
According to the route search device of the present invention, the estimated exhaust gas amount is calculated by the exhaust gas amount estimating means using the actual exhaust gas amount accumulated in the information storage device. The estimated exhaust gas amount can be calculated using the information, and the accuracy of searching for an optimal traveling route for reducing the exhaust gas amount can be improved.
[0046]
According to the route search method of the sixteenth aspect, at least the current position and the road near the destination are searched to calculate the estimated amount of exhaust gas, and the travel route that reduces the estimated amount of exhaust gas is searched. It is possible to search for an optimal traveling route for reducing the amount of exhaust gas to be generated.
[0047]
According to the route search method of the present invention, a road near the current position and the destination is searched, and the estimated exhaust gas amount is calculated using any one of the road gradient information, the road shape information, and the road type information. Therefore, it is possible to calculate the estimated amount of exhaust gas by using the fact that the amount of exhaust gas varies depending on the road gradient, road shape, and road type, and to improve the accuracy of searching for the optimal travel route to reduce the amount of exhaust gas. Can be improved.
[0048]
According to the route search method of the eighteenth aspect, since the estimated exhaust gas amount is calculated according to the driving pattern, the estimated exhaust gas amount can be calculated by utilizing the fact that the exhaust gas amount differs depending on the driving pattern, It is possible to improve the accuracy of searching for an optimal traveling route for reducing the amount of exhaust gas. Further, according to the route searching method of the eighteenth aspect, since the estimated exhaust gas amount is calculated by storing different driving patterns for each vehicle driver, it is possible to further improve the accuracy of searching for an optimal driving route. it can.
[0049]
According to the route searching method according to the nineteenth aspect, the display form of the traveling route is displayed in a distinctive manner according to the actual exhaust gas amount, so that it is possible to determine on which road section of the traveling route a large amount of exhaust gas was emitted. It can be presented to the driver.
[0050]
According to the route search method of the twentieth aspect, since each travel point on the travel route and the estimated exhaust gas amount are displayed in a graph in association with each other, it is possible to determine in advance which road section of the travel route the exhaust gas amount increases. It can be accurately presented to the vehicle driver.
[0051]
According to the route search method of the present invention, since each traveling point on the traveling route is displayed in a graph in association with the actual exhaust gas amount, which road section of the traveling route emits a large amount of exhaust gas. Can be accurately presented to the vehicle driver.
[0052]
According to the route search system according to claim 22, since the estimated exhaust gas amount is calculated using the traveling route information and the actual exhaust gas amount information by the plurality of route search devices, the estimated exhaust gas amount is utilized using a large amount of information. Can be calculated, and the accuracy of searching for the optimal traveling route for reducing the amount of exhaust gas can be improved.
[0053]
According to the route search system according to the twenty-third aspect, the information based on the plurality of travel route information and the actual exhaust gas amount information by the plurality of route search devices mounted on the vehicle of the same rank is presented to the vehicle driver. It is possible to calculate the estimated amount of exhaust gas using a large amount of information, and it is possible to improve the accuracy of searching for an optimal traveling route for reducing the amount of exhaust gas.
[0054]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0055]
The present invention is applied to, for example, a navigation system configured as shown in FIG.
[0056]
[Configuration of navigation system]
The navigation system includes an in-vehicle device 1 mounted on a vehicle driven by a vehicle driver, and an information management server 2 connected to the in-vehicle device 1 via a communication line.
[0057]
The in-vehicle device 1 includes an operation input unit 11, a speaker 12, and a display device 13 provided at positions visible as an interface for a vehicle driver, a route search control unit 14, a road information storage unit 15, and a A communication I / F 16, an exhaust gas component detection sensor 17 connected to, for example, a gas exhaust mechanism of the vehicle, a vehicle speed pulse generator 18 connected to a vehicle drive mechanism, and a driving operation connected to an accelerator mechanism and a brake mechanism A detection unit 19, a traffic jam information detection unit 20 provided in the vehicle body, and a GPS signal detection unit 21 are provided.
[0058]
The operation input unit 11 includes, for example, a switch, a dial, and a joystick, and is provided at a position where the vehicle driver can operate. When the operation input unit 11 is operated, the content of the operation is detected by the route search control unit 14. The operation input unit 11 is operated to input, for example, a destination, a waypoint, the number of passengers, and the like of the vehicle.
[0059]
The speaker 12 is provided at a position where various contents such as route guidance can be notified by voice to the vehicle driver. The speaker 12 inputs the acoustic data from the route search control unit 14 and emits a sound to notify the vehicle driver of the traveling route and the like.
[0060]
The display device 13 includes, for example, a liquid crystal mechanism, and is provided at a position where the vehicle driver can visually recognize the display device. The display device 13 presents various contents to the vehicle driver by inputting and displaying a map, display data indicating a vehicle position, a traveling route, information on exhaust gas, and the like from the route search control unit 14.
[0061]
The road information storage unit 15 stores map data used for a route search process by the route search control unit 14. This map data includes at least road link information indicating a road included in the map. The contents of the road information storage unit 15 are read by the route search control unit 14.
[0062]
The road link information stored in the road information storage unit 15 includes road curvature information, road gradient, road condition information of a road type (general road, toll road, etc.), and exhaust gas generated when the vehicle travels on the road of the road condition information. Exhaust gas amount weighting information indicating a weighting coefficient corresponding to the gas amount.
[0063]
In the exhaust gas amount weighting information, a value corresponding to the amount of exhaust gas exhausted from the vehicle according to the road condition is set. This exhaust gas amount weighting information is set to a value corresponding to the fact that the accelerator operation is small and the exhaust gas amount is small on a road running at a constant speed, and that the exhaust gas amount is large on a road where the accelerator operation for accelerating is large. Is set according to.
[0064]
For example, after passing through a road having a large road curvature, the exhaust gas amount weighting information for a straight road having a length equal to or greater than a predetermined threshold value indicates that the vehicle needs to be accelerated after passing a curve, and the accelerator opening becomes large. Is set to a value larger than the exhaust gas amount weighting information of the road on which the vehicle can be driven at a constant speed.
[0065]
The exhaust gas component detection sensor 17 is composed of a sensor group that detects a specific component of the exhaust gas emitted from the vehicle. The exhaust gas component detection sensor 17 includes, for example, a NOx sensor, an HC sensor, a CO sensor, ₂ It consists of a sensor. The exhaust gas component detection sensor 17 outputs an exhaust gas amount sensor signal indicating the amount of exhaust gas of the specific component detected by each sensor to the route search control unit 14. In the following description, the exhaust gas amount detected by the exhaust gas component detection sensor 17 is referred to as “actual exhaust gas amount”, and the road link weighting processing unit 33 described later calculates the exhaust gas amount using the exhaust gas amount weighting information. The exhaust gas amount calculated by the unit 34 is referred to as “estimated exhaust gas amount”, and when both are collectively referred to simply as “exhaust gas amount”.
[0066]
The vehicle speed pulse generator 18 detects a driving amount of the vehicle drive mechanism and generates a vehicle speed pulse indicating the vehicle speed. The vehicle speed pulse generator 18 outputs the generated vehicle speed pulse to the route search controller 14.
[0067]
The driving operation detecting unit 19 detects the accelerator opening in accordance with the operation of the accelerator pedal by the vehicle driver and outputs it to the route search control unit 14, and responds to the operation of the brake pedal by the vehicle driver. The brake operation amount information is generated and output to the route search control unit 14.
[0068]
The congestion information detection unit 20 is connected to an external information transmission device, detects congestion information from the information transmission device, and outputs the information to the route search control unit 14.
[0069]
A GPS (global positioning system) signal detection unit 21 is connected to a GPS satellite by wireless communication, detects a signal from the GPS satellite, and outputs the signal to the route search control unit 14.
[0070]
The communication I / F 16 is connected to the information management server 2 via a communication line, converts information from the route search control unit 14 into a communicable form, transmits the information to the information management server 2, and transmits the information to the information management server 2. Is converted into a form that can be processed by the route search control unit 14 and output to the route search control unit 14.
[0071]
The route search control unit 14 includes a route search unit 31, a driving pattern classification processing unit 32, a road link weighting processing unit 33, an exhaust gas amount calculation unit 34, a display control unit 35, a locator 36, a guidance control unit 37, and an exhaust gas history database. And an exhaust gas component database 39. The route search control unit 14 configures the exhaust gas history database unit 38 and the exhaust gas component database unit 39 by storing the exhaust gas history database and the exhaust gas component database in the internal storage unit. In addition, the route search control unit 14 includes a storage mechanism that internally stores a route search control program, a CPU (Central Processing Unit) that executes the route search control program stored in the storage mechanism, and the like. A pattern classification processing unit 32, a road link weighting processing unit 33, an exhaust gas amount calculation unit 34, a display control unit 35, a locator 36, and a guidance control unit 37 are configured. The route search unit 31, the driving pattern classification processing unit 32, the road link weighting processing unit 33, the exhaust gas amount calculation unit 34, the display control unit 35, the locator 36, and the guidance control unit 37 constitute a route search control program. It is a module, and is configured to input and output processing results between each module.
[0072]
The exhaust gas component database unit 39 stores the exhaust gas amount information and the exhaust gas component information according to the vehicle information of the vehicle mounted with the on-vehicle device 1, and also stores the route information, the road link information (road section information), and the time information. Is associated with the exhaust gas component database. This exhaust gas history database is referred to in processing performed by the exhaust gas amount calculation unit 34 and the guidance control unit 37. The vehicle information includes a vehicle type, a vehicle type, a model year, and the like.
[0073]
The exhaust gas component database unit 39 inputs, from the communication I / F 16, data from the information management server 2 corresponding to the size of the vehicle on which the on-board device 1 is mounted. The exhaust gas component database unit 39 creates an exhaust gas component database by associating actual exhaust gas amount information, route information, road link information (road section information), and time information included in the input data. The exhaust gas component database unit 39 updates the exhaust gas component database at predetermined intervals by inputting data received at predetermined intervals by the communication I / F 16.
[0074]
Such an exhaust gas component database unit 39 creates an exhaust gas component database in which a general exhaust gas amount to be emitted according to the size of the vehicle is associated with various types of information.
[0075]
Further, the exhaust gas component database unit 39 inputs the traffic congestion prediction information, which is received by the communication I / F 16 and predicts the traffic congestion time and the road section, and associates the exhaust gas with the time information and the road link information. Update the component database.
[0076]
The exhaust gas history database unit 38 stores an exhaust gas history in which actual exhaust gas amount information, exhaust gas component information, driving pattern information, route information, road link information (road section information), and time information that have been emitted in the past are associated. A database is stored. This exhaust gas history database is referred to in processing performed by the exhaust gas amount calculation unit 34 and the guidance control unit 37.
[0077]
The exhaust gas history database unit 38 receives a sensor signal indicating the actual exhaust gas amount from the exhaust gas component detection sensor 17 and generates actual exhaust gas amount information and exhaust gas component information. Further, the exhaust gas history database unit 38 inputs the operation pattern information generated by the operation pattern classification processing unit 32, inputs the route information and the section information from the guidance control unit 37, and associates the emission information with the time information. Update the contents of the gas history database.
[0078]
Such an exhaust gas history database unit 38 creates an exhaust gas history database in which actual exhaust gas amounts corresponding to vehicle drivers are associated with various types of information.
[0079]
The driving pattern classification processing unit 32, the road link weighting processing unit 33, and the exhaust gas amount calculation unit 34 perform preprocessing of the route search processing performed by the route search unit 31. The processing results of the driving pattern classification processing unit 32, the road link weighting processing unit 33, and the exhaust gas amount calculation unit 34 are used in the route search processing of the route search unit 31.
[0080]
The driving pattern classification processing unit 32 recognizes a specific driving pattern from the driving pattern table shown in FIG. 2 based on past driving characteristics of the vehicle driver and generates driving pattern information.
[0081]
The operation pattern classification processing unit 32 stores an operation pattern table as shown in FIG. According to FIG. 2, the driving patterns are divided into “1”, “2”, and “3”, and the accelerator operation amount when traveling on a gradient road, the accelerator operation type when traveling on a curve, and the acceleration on a toll road for each driving pattern. It stores the accelerator operation type at the time of operation, the accelerator operation type at the time of steady (constant speed) traveling on a toll road, the accelerator operation type at the time of acceleration on a general road, and the accelerator operation type at the time of ordinary traveling on a general road.
[0082]
In the example shown in FIG. 2, the accelerator operation type is divided into three stages of "A", "B", and "C", and the accelerator operation type is associated with the driving pattern. The accelerator operation type “A” indicates that the accelerator opening change amount and the accelerator operation amount per unit time are larger than a predetermined range, and the accelerator operation type “B” indicates the accelerator opening change amount and the accelerator operation amount per unit time. This indicates that the operation amount is within a predetermined range, and that the accelerator opening change amount per unit time and the accelerator operation amount are smaller than the predetermined range.
[0083]
The driving pattern classification processing unit 32 inputs the road information from the road information storage unit 15 as needed when driving the vehicle, and also inputs the accelerator opening information and the brake operation amount information from the driving operation detection unit 19 as needed. The driving pattern classification processing unit 32 converts the accelerator opening information and the brake operation amount information into a database corresponding to the road information from the road information storage unit 15. That is, the driving pattern classification processing unit 32 records an accelerator opening and a brake operation amount in a certain road condition (gradient, curve, toll road, general road) and creates a driving operation database.
[0084]
The driving pattern classification processing unit 32 compares the contents of the driving operation database with the driving pattern table, recognizes the most similar driving pattern as the driving pattern of the vehicle driver, and generates driving pattern information.
[0085]
Such driving pattern information includes, for example, driving characteristics of accelerator operation, such as a driving pattern in which the accelerator is depressed and suddenly accelerated when the vehicle is started to run, and a driving pattern in which the acceleration time until the required vehicle speed is slowly accelerated is long. Classified by
[0086]
The road link weighting unit 33 includes an exhaust gas history database unit 38, an exhaust gas component database unit 39, driving pattern information generated by the driving pattern classification processing unit 32, traffic information detected by the traffic information detecting unit 20, and road information storage. Using the road link information from the section 15, the exhaust gas amount weighting information of each road link stored and set in the road information storage section 15 is updated. The road link weighting unit 33 outputs the updated exhaust gas amount weighting information to the road information storage unit 15. The specific processing content of the road link weighting processing unit 33 will be described later.
[0087]
The exhaust gas amount calculation unit 34 reads the road link information from the road information storage unit 15 and estimates, when the vehicle travels on the road corresponding to the road link, according to the exhaust gas amount weighting information included in the road link information. Calculate emissions. The exhaust gas amount calculation unit 34 sums up the estimated exhaust gas amounts obtained for the road links constituting the travel route obtained by the route search unit 31 to obtain the total estimated exhaust gas amount when the vehicle travels on the travel route. To get.
[0088]
Locator 36 obtains the current position of the vehicle using the signal from GPS signal detection unit 21 and generates current position information.
[0089]
The route search unit 31 detects the operation content of the operation input unit 11, and recognizes the destination, the waypoint, and the number of passengers of the vehicle based on the detected operation content. The route search unit 31 starts a route search process for creating travel route information in response to recognizing the current position information, the vehicle destination, the waypoint, and the number of passengers generated by the locator 36.
[0090]
The route search unit 31 causes the exhaust gas amount calculation unit 34 to calculate the estimated exhaust gas amount of the searched travel route in the route search processing, thereby forming a travel route that minimizes the total estimated exhaust gas amount. To select each road link.
[0091]
The guidance control unit 37 guides the vehicle by emitting sound from the speaker 12 on the traveling route obtained by the route searching unit 31 when the vehicle is traveling.
[0092]
The display control unit 35 stores the map data stored in the road information storage unit 15, the current position obtained by the locator 36, the traveling route obtained by the route search unit 31, the estimated exhaust gas amount obtained by the exhaust gas amount calculation unit 34, Display data for displaying the actual exhaust gas amount and the like on the display device 13 is created and displayed on the display device 13.
[0093]
The information management server 2 is communicatively connected to a plurality of in-vehicle devices 1 to transmit and receive information. The information management server 2 receives, from the in-vehicle device 1 registered in advance, a traveling route, an actual exhaust gas amount when traveling on the traveling route, and vehicle information. Thus, the information management server 2 creates a database that stores the travel route and the actual exhaust gas amount in association with the vehicle information. The information management server 2 updates the contents of the exhaust gas component database of the on-vehicle device 1 by transmitting the actual amount of exhaust gas that matches the vehicle information to the on-vehicle device 1.
[0094]
Further, the information management server 2 performs an arithmetic process using information from the plurality of in-vehicle devices 1 to generate an average actual exhaust gas amount and the like for each vehicle information and transmit the generated amounts to the in-vehicle devices 1. As a result, the information management server 2 presents the actual exhaust gas amounts of other vehicle drivers who are driving vehicles of the same vehicle type.
[0095]
Further, the information management server 2 may create information on a driving method for reducing the actual exhaust gas amount based on the information from the plurality of on-vehicle devices 1 and transmit the information to the on-vehicle device 1.
[0096]
Note that, in the above-described navigation system, an example in which the congestion information acquired by the congestion information detection unit 20 is used as the environment information around the vehicle is described. However, the navigation system further includes an outside air temperature sensor that acquires the outside air temperature around the vehicle. Road link weighting processing and exhaust gas amount calculation may be performed using the information as environmental information.
[0097]
"Update processing of emission weighting information"
Hereinafter, when the weighting coefficient of the road section is LC, the weighting coefficient by the exhaust gas history database is PD, the weighting coefficient by the exhaust gas history database is GD, the weighting coefficient by the traffic congestion information is TC, and the weighting coefficient of the road link is RC. Update processing of the weighting coefficient RC (exhaust gas amount weighting information) by the road link weighting processing unit 33 will be described.
[0098]
The road link weighting processing unit 33 reads out the actual exhaust gas amount of each exhaust gas component from the exhaust gas history database, and obtains the actual exhaust gas amount of each exhaust gas component by multiplying the coefficient set for each exhaust gas component. A weighting coefficient PD is obtained by adding the calculation results.
[0099]
Specifically, the road link weighting processing unit 33 reads, from the exhaust gas history database, the actual exhaust gas amount of each exhaust gas component when the vehicle has traveled in the past on the section of the road link to be updated. Then, as shown in the following equation, the road link weighting processing unit 33 calculates the coefficient a to the actual NOx exhaust gas amount stored in the exhaust gas history database, the coefficient b to the actual CO exhaust gas amount, ₂ Coefficient c, CO ₂ Is multiplied by a coefficient d.
NOx actual exhaust gas amount x a = Ca
Actual CO emission x b = Cb
SO ₂ Actual exhaust gas amount x c = Cc
CO ₂ Actual exhaust gas amount x d = Cd
The road link weighting processing unit 33 calculates the weighting coefficient PD (= Ca + Cb + Cc + Cd) by adding the calculation results Ca, Cb, Cc, and Cd obtained by the above equation.
[0100]
In addition, the road link weighting processing unit 33 reads the actual exhaust gas amount of each exhaust gas component from the exhaust gas component database, and calculates a calculation result obtained by multiplying the actual exhaust gas amount by a coefficient set for each exhaust gas component. By adding, the weighting coefficient GD is obtained.
[0101]
Specifically, the road link weighting processing unit 33 reads the actual exhaust gas amount corresponding to the weight coefficient of the road link to be updated from the exhaust gas component database for each exhaust gas component. Then, as shown in the following equation, the road link weighting processing unit 33 calculates a coefficient a for the actual exhaust gas amount of NOx and a coefficient b for the actual exhaust gas amount of CO stored in the exhaust gas component database. ₂ Coefficient c, CO ₂ Is multiplied by a coefficient d.
NOx actual exhaust gas amount x a = GCa
Actual CO emission x b = GCb
SO ₂ Actual exhaust gas amount x c = GCc
CO ₂ Actual exhaust gas amount x d = GCd
The road link weighting processing unit 33 obtains a weighting coefficient GD (= GCa + GCb + GCc + GCd) by adding the calculation results GCa, GCb, GCc, and GCd obtained by the above equation.
[0102]
Further, the road link weighting processing unit 33 obtains a weighting coefficient RC according to the driving pattern information, the road condition information, and the in-vehicle weight (the number of passengers) corresponding to the road condition information. The road link weighting processing unit 33 multiplies the driving pattern coefficient indicating the weight according to the driving pattern, the road condition coefficient indicating the weight according to the road condition, and the in-vehicle weight coefficient indicating the weight according to the in-vehicle weight, for each road condition. To calculate the weighting coefficient RC by adding the calculation result of each road condition.
[0103]
Specifically, using the road condition coefficient e of the curve, the road condition coefficient f of the gradient, and the road condition coefficient g of the expressway, the driving pattern coefficients e to g are calculated as shown in the following equations. And the vehicle weight coefficient.
Number of curves x coefficient e x driving pattern coefficient x vehicle weight coefficient = Ce
Number of gradients × coefficient f × driving pattern coefficient × vehicle weight coefficient = Cf
Number of toll roads x coefficient g x driving pattern coefficient x vehicle weight coefficient = Cg
Thus, the calculation results Ce, Cf, and Cg are obtained for each curve, gradient, and toll road. Then, the road link weighting processing unit 33 obtains a weighting coefficient RC (= Ce + Cf + Cg) by adding the respective calculation results.
[0104]
The road link weighting processing unit 33 obtains the weighting coefficient LC in a certain section by adding the weighting coefficient PD or the weighting coefficient GD obtained as described above, the weighting coefficient RC, and the weighting coefficient TC at the time of traffic congestion. . Then, the road link weighting processing unit 33 multiplies the exhaust gas amount weighting coefficient information included in the road link information stored in the road information storage unit 15 by the obtained weighting coefficient, thereby converting the exhaust gas amount weighting coefficient information. Update.
[0105]
Further, the road link weighting processing unit 33 calculates the weighting coefficient of the traveling route by summing the weighting factors of the road links constituting the traveling route.
[0106]
[Operation of navigation system]
Next, the operation of the above-described navigation system will be described with reference to FIG.
[0107]
According to FIG. 3, first, when the vehicle driver gets on the vehicle and operates the operation input unit 11, the process of step S1 is started, and the route search control unit 14 detects the operation of the operation input unit 11. Then, the destination, the waypoint, and the number of passengers are input, and the process proceeds to step S2.
[0108]
In step S2, the locator 36 inputs a signal from the GPS signal detection unit 21 to generate current position information, and the route search unit 31 searches for a destination, a waypoint, and a point near the current position. Then, the road link information serving as the traveling route is read from the road information storage unit 15, and the process proceeds to step S3.
[0109]
In step S3, the road link weighting processing unit 33 performs a road link weighting process of updating the exhaust gas amount weighting information for each road link information read in step S2.
[0110]
At this time, as shown in FIG. 4, the road link weighting processing unit 33 performs the operation pattern information by the operation pattern classification processing of the operation pattern classification processing unit 32, the actual exhaust gas amount stored in the exhaust gas history database unit 38, or the emission amount. A process of reading the actual exhaust gas amount stored in the gas component database unit 39, the traffic congestion information detected by the traffic congestion information detecting unit 20, and the exhaust gas amount weighting information for the road link information stored in the road information storage unit 15 is performed ( Step S3-1 to step S3-5). Further, the road link weighting processing section 33 reads out road condition information for each road link information read out in step S2.
[0111]
Then, the road link weighting processing unit 33 updates the weighting coefficient for each road link using the information on the number of occupants input in step S1 in addition to the read various information. Next, in step S3-6, the road link weighting unit 33 updates the preset exhaust gas amount weighting information using the updated weighting coefficient, so that the exhaust gas amount weighting according to the current situation is performed. Make it information.
[0112]
In the next step S4, the route search unit 31 obtains a traveling route from the current position obtained in steps S1 and S2 to the destination via the waypoint. At this time, the estimated exhaust gas amount of each road link constituting the travel route is obtained by the exhaust gas amount calculation unit 34 using the exhaust gas amount weighting coefficient updated in step S3, and the estimated exhaust gas amount of each road link is summed up. Then, the estimated exhaust gas amount is calculated and obtained. As a result, the route search unit 31 creates a traveling route on which the estimated exhaust gas amount is estimated to be the minimum.
[0113]
In this step S4, the exhaust gas amount calculating section 34 calculates an estimated exhaust gas amount for each exhaust gas component on the traveling route, and further calculates an estimated exhaust gas amount for each exhaust gas component at a halfway point on the traveling route. .
[0114]
In the next step S5, the display control unit 35 performs a display control process for displaying a traveling route that minimizes the estimated exhaust gas amount obtained in step S4. At this time, as shown in FIG. 5, the display control unit 35 inputs travel route information in step S5-1, and displays the travel route in step S5-2 according to the estimated exhaust gas amount estimated in step S4. A display control process for distinguishing between forms is performed. As a result, the display device 13 displays the travel route subjected to the display control processing in step S6.
[0115]
That is, for example, the display control unit 35 distinguishes the display color between a section having a large estimated exhaust gas amount and a section having a small estimated exhaust gas amount, and thereby displays a different estimated exhaust gas amount depending on the section. To the person. More specifically, a section in which the estimated exhaust gas amount is larger than the predetermined threshold value is displayed in red, and a section in which the estimated exhaust gas amount is smaller than the predetermined threshold value is displayed in green.
[0116]
Further, the display control unit 35 displays the traveling route that requires the shortest time to reach the destination from the current position, in addition to the traveling route with the smallest estimated exhaust gas amount obtained in step S4, A traveling route that requires the shortest distance to reach the destination from the position may be displayed, and the driving route may be selectable.
[0117]
When the vehicle is driven by the driving operation of the vehicle driver while the traveling route and the current position of the vehicle are displayed on the display device 13 by performing such processing, the guidance control unit 37 performs the route guidance processing. At this time, the current position information is generated by the locator 36 using the signal from the GPS signal detecting unit 21, and the signal from the vehicle speed pulse from the vehicle speed pulse generating unit 18 is input by the guidance control unit 37, so that the traveling route is The loudspeaker 12 and the display device 13 are controlled so as to provide route guidance at a predetermined point above.
[0118]
When the vehicle is running, the actual amount of exhaust gas detected by the exhaust gas component detection sensor 17 is input by the route search control unit 14 for each specific exhaust gas component. As a result, the exhaust gas history database unit 38 updates the contents of the exhaust gas history database so that the actual exhaust gas amount corresponds to the road section and the time information.
[0119]
When the vehicle arrives at the destination after performing such route guidance processing, the display control unit 35 records the time and this time together with the total actual exhaust gas amount actually exhausted recorded in the exhaust gas history database unit 38. And the actual exhaust gas amount at this point is displayed for each exhaust gas component. Further, the display control unit 35 displays the estimated exhaust gas amount estimated in step S4 together with the actual exhaust gas amount in a superimposed manner, thereby performing comparison display.
[0120]
"Specific emission gas display example"
FIG. 6 shows a display example when displaying in a different display form on the traveling route according to the estimated exhaust gas amount. In the example shown in FIG. 6, for example, points A and B are road sections having an uphill gradient, points B and C are road sections having a large road curvature, and points C and D are downhill gradients. It is assumed that this is a road section having.
[0121]
At this time, when the estimated exhaust gas amount is calculated by the exhaust gas amount calculation unit 34, the estimated exhaust gas amount falls within a predetermined range in the road section from the point A to the point B, and the estimated exhaust gas amount in the road section from the point B to the point C. Becomes larger than the predetermined range, and the estimated exhaust gas amount becomes smaller than the predetermined range in the road section from the point C to the point D.
[0122]
In the display control unit 35, the road sections of the points A to B, the points B to C, and the points C to D are displayed in different forms. Thus, the display device 13 allows the vehicle driver to recognize that the estimated estimated exhaust gas amount is different.
[0123]
FIG. 7 shows an example in which the change in the amount of exhaust gas of each exhaust gas component with time from the current position to the destination is displayed. In this example, a case where the vehicle departs from the current point at 12:15 and arrives at the destination at 17:15 is shown, a solid line shows a time change of the actual exhaust gas amount, and a broken line shows a time change of the estimated exhaust gas amount. Is shown.
[0124]
When performing the display as shown in FIG. 7, the display control unit 35 reads the estimated exhaust gas amount and the actual exhaust gas amount for each exhaust gas component corresponding to the time information from the exhaust gas history database unit 38, and displays the display data. It is created and output to the display device 13.
[0125]
In addition, the display control unit 35 performs the operation on the road section corresponding to the time information in response to the operation input unit 11 inputting the operation input signal operated by the vehicle driver during the display illustrated in FIG. 7. The information (such as a place name) and the instantaneous actual exhaust gas amount are read from the exhaust gas history database unit 38, and the information about the road section is displayed. In this example, "around the interchange, 15:00, NOx amount, HC amount, CO amount, CO2 amount" is displayed.
[0126]
Accordingly, the navigation system displays each traveling point on the traveling route, the estimated exhaust gas amount, and the actual exhaust gas amount in a graph and presents the graph to the vehicle driver.
[0127]
Note that, in this example, an example is shown in which the display is performed after the vehicle travels along the travel route. However, the estimated exhaust gas amount and the travel point may be displayed in a graph after calculating the estimated exhaust gas amount.
[0128]
[Effects of Embodiment]
As described above in detail, according to the navigation system according to the present embodiment, the road link weighting processing unit 33 updates the exhaust gas amount weighting information of each road link information by using various conditions in combination, Since the estimated exhaust gas amount when traveling on the traveling route can be calculated, it is possible to search for an optimal traveling route for minimizing the estimated exhaust gas amount discharged from the vehicle.
[0129]
Also, according to this navigation system, the estimated exhaust gas amount is calculated by updating the exhaust gas amount weighting information using the road information of the road gradient, the road curvature, and the road type. It is possible to calculate the estimated exhaust gas amount by utilizing the fact that it differs depending on the shape and the road type, and it is possible to improve the accuracy of traveling and searching for a traveling route with the minimum estimated exhaust gas amount.
[0130]
Further, according to this navigation system, the estimated exhaust gas amount is calculated by updating the exhaust gas amount weighting information using the vehicle information, so that the estimated exhaust gas amount can be calculated using the fact that the actual exhaust gas amount differs depending on the vehicle. The calculation can be performed, and the accuracy of searching for a traveling route with the smallest estimated exhaust gas amount can be improved.
[0131]
Furthermore, according to this navigation system, the estimated exhaust gas amount is calculated by updating the exhaust gas amount weighting information using the on-vehicle weight, so that the estimated exhaust gas amount differs depending on the on-vehicle weight. The amount can be calculated, and the accuracy of searching for a traveling route with the smallest estimated exhaust gas amount can be improved.
[0132]
Furthermore, according to this navigation system, the estimated exhaust gas amount is calculated by updating the exhaust gas amount weighting information using the traffic congestion information, so that the fact that the actual exhaust gas amount differs due to the occurrence of the traffic congestion is utilized. The estimated exhaust gas amount can be calculated, and the accuracy of searching for a traveling route with the minimum estimated exhaust gas amount can be improved.
[0133]
Furthermore, according to this navigation system, the estimated exhaust gas amount is calculated by updating the exhaust gas amount weighting information according to the driving pattern, and the estimated exhaust gas amount is calculated based on the fact that the actual exhaust gas amount differs depending on the driving pattern. It is possible to improve the accuracy of searching for a travel route with the smallest estimated exhaust gas amount, and further, it is possible to calculate the estimated exhaust gas amount according to a driving pattern that differs for each vehicle driver. it can.
[0134]
Furthermore, according to this navigation system, the estimated exhaust gas amount is calculated by updating the exhaust gas amount weighting information using the history of the actual exhaust gas amount, so that the accuracy of searching for a travel route with the minimum estimated exhaust gas amount is determined. Can be improved.
[0135]
Furthermore, according to this navigation system, since the exhaust gas component database is updated by the exhaust gas component database unit 39 using the traffic congestion prediction information received from the information management server 2, the estimated emission that changes due to the occurrence of traffic congestion. The estimated exhaust gas amount can be calculated by recognizing the gas amount.
[0136]
In addition, the information management server 2 receives a travel route from the plurality of in-vehicle devices 1 and an actual exhaust gas amount when the vehicle travels along the travel route, and classifies the vehicle type, vehicle type, and year by the vehicle size, engine displacement, and the like. A database storing the travel route and the actual exhaust gas amount when the vehicle travels along the travel route is created and transmitted to the on-vehicle device 1 in accordance with the vehicle information such as the formula, and transmitted to the vehicle-mounted device 1. The actual exhaust gas amount and the like can be presented. Thus, according to this navigation system, it is possible to present the actual exhaust gas amount of another vehicle driver driving a vehicle of the same vehicle type. Therefore, according to this navigation system, it is possible to present the actual exhaust gas amount compared with other vehicle drivers, and to notify whether or not the vehicle is driving with a small actual exhaust gas amount, and to notify the actual exhaust gas amount. It is possible to evoke less driving.
[0137]
Furthermore, according to this navigation system, the display form of the travel route is displayed in a distinctive manner according to the estimated exhaust gas amount, so that the vehicle driver can determine in advance which road section of the travel route the actual exhaust gas amount will increase. Can be presented. Further, according to this navigation system, the display form of the traveling route is distinguished and displayed according to the actually measured actual exhaust gas amount, so which road section of the traveling route emits a large amount of the actual exhaust gas amount can be determined. It can be presented to the vehicle driver.
[0138]
Furthermore, according to this navigation system, as shown in FIG. 7, each traveling point on the traveling route and the estimated exhaust gas amount are displayed in a graph so that the actual exhaust gas amount can be reduced in any road section of the traveling route. It is possible to accurately indicate to the vehicle driver in advance whether the number will increase. In addition, according to this navigation system, since each traveling point on the traveling route is displayed in a graph in association with the actual exhaust gas amount, it is possible to determine on which road section of the traveling route a large amount of the actual exhaust gas was emitted by the vehicle. It can be accurately presented to the driver.
[0139]
Note that the above embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and other than the present embodiment, various modifications may be made according to the design and the like within a range not departing from the technical idea according to the present invention. Can be changed.
[0140]
That is, in the above-described example, the case where traffic congestion information is acquired and used for calculating the estimated exhaust gas amount as information on the environment around the vehicle has been described. However, the present invention is not limited to this. Information may be used.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a navigation system to which the present invention is applied.
FIG. 2 is a diagram for describing an operation pattern table stored in an operation pattern classification processing unit.
FIG. 3 is a flowchart showing a processing procedure of the navigation system to which the present invention is applied.
FIG. 4 is a flowchart illustrating a processing procedure of a road link weighting process performed by a road link weighting processing unit;
FIG. 5 is a flowchart illustrating a processing procedure of a display control process performed by a display control unit.
FIG. 6 is a diagram for explaining a display example in which a display mode is distinguished according to a difference in estimated exhaust gas amount.
FIG. 7 is a diagram for explaining that an actual exhaust gas amount and an estimated exhaust gas amount are associated with time information and displayed in a graph for each exhaust gas component.
[Explanation of symbols]
1 In-vehicle equipment
2 Information management server
11 Operation input section
12 speakers
13 Display device
14 Route search control unit
15 Road information storage unit
16 Communication I / F
17 Exhaust gas component detection sensor
18 Vehicle speed pulse generator
19 Driving operation detector
20 Traffic information detector
21 GPS signal detector
31 Route search unit
32 Operation pattern classification processing unit
33 Road link weighting processor
34 Exhaust gas amount calculation section
35 Display control unit
36 locator
37 Guidance control unit
38 Exhaust gas history database
39 Exhaust gas component database

Claims (23)

Information acquisition means for acquiring current position information and destination information of the vehicle,
Route search means for searching for a traveling route to arrive from the current position indicated by the current position information acquired by the information acquisition means to the destination indicated by the destination information;
Exhaust gas amount estimating means for calculating an estimated exhaust gas amount by estimating an exhaust gas amount of a predetermined component emitted from the vehicle when traveling on the traveling route searched by the route searching means,
A route search device comprising: a route search control unit that controls the route search unit so as to search for a travel route that reduces the estimated exhaust gas amount calculated by the exhaust gas amount estimation unit. 2. The exhaust gas amount estimating means calculates an estimated exhaust gas amount by using any one of road gradient information, road shape information, and road type information included in map data. Route search device. The apparatus further includes a vehicle information obtaining unit configured to obtain vehicle information regarding the vehicle,
The route search device according to claim 1, wherein the exhaust gas amount estimating unit calculates an estimated exhaust gas amount using the vehicle information acquired by the vehicle information acquiring unit. 4. The route search device according to claim 3, wherein the exhaust gas amount estimating means calculates an estimated exhaust gas amount using at least a vehicle-mounted weight as the vehicle information. Further comprising environmental information acquisition means for acquiring environmental information about the environment around the vehicle,
The route search device according to claim 1, wherein the exhaust gas amount estimating unit calculates an estimated exhaust gas amount using the environment information acquired by the environment information acquiring unit. The route search device according to claim 5, wherein the exhaust gas amount estimating means calculates an estimated exhaust gas amount using at least an outside air temperature as the environmental information. 6. The route search device according to claim 5, wherein the exhaust gas amount estimating means calculates an estimated exhaust gas amount using at least traffic jam information acquired from outside as the environmental information. The vehicle further includes a driving pattern storage unit that stores driving patterns of the vehicle by classifying the vehicle according to features of the road,
The route search device according to claim 1, wherein the exhaust gas amount estimating means calculates an estimated exhaust gas amount according to the operation pattern stored in the operation pattern storage means. Further provided is a history storage means for storing a history of the actual exhaust gas amount actually emitted from the vehicle,
2. The route search device according to claim 1, wherein the exhaust gas amount estimating unit calculates the estimated exhaust gas amount using the history of the actual exhaust gas amount stored in the history storage unit. 3. Display means for displaying at least the travel route searched by the route search means;
A display control means for controlling the display means so as to distinguish and display a display form of the travel route according to the estimated exhaust gas amount calculated by the exhaust gas amount estimation means. Item 2. The route search device according to item 1. An exhaust gas sensor that measures the actual amount of exhaust gas emitted from the vehicle,
Exhaust gas amount storage means for storing an actual exhaust gas amount measured by the exhaust gas sensor,
Display means for displaying at least the travel route searched by the route search means;
A display control means for controlling the display means so as to distinguish and display the display form of the travel route in accordance with the actual exhaust gas amount stored in the exhaust gas amount storage means. Item 13. The route search device according to item 10. Display means for displaying various information;
Display control means for controlling the display means so as to display each traveling point on the traveling route searched by the route searching means and the estimated exhaust gas amount calculated by the exhaust gas amount estimating means in a graph in association with each other The route searching device according to claim 1, further comprising: An exhaust gas sensor that measures the actual amount of exhaust gas emitted from the vehicle,
Exhaust gas amount storage means for storing an actual exhaust gas amount measured by the exhaust gas sensor,
Display means for displaying various information;
Display control means for controlling the display means so as to graphically display each traveling point on the traveling route searched by the route search means and the actual exhaust gas amount stored in the exhaust gas amount storage means in a graph. The route searching device according to claim 1, further comprising: An exhaust gas sensor that measures the actual amount of exhaust gas emitted from the vehicle,
The information storage device capable of communicating with a plurality of vehicles further includes communication means for transmitting the actual exhaust gas amount measured by the exhaust gas sensor and information indicating a point at which the actual exhaust gas amount is measured. The route search device according to claim 1. 15. The route search device according to claim 14, wherein said exhaust gas amount estimating means calculates an estimated exhaust gas amount using an actual exhaust gas amount accumulated in said information storage device obtained by said communication means. . A first step of obtaining a current position and a destination of the vehicle;
A second step of at least searching for a road near the current position and the destination;
A third step of estimating an exhaust gas amount of a predetermined component emitted from the vehicle when traveling on the road searched in the second step and calculating an estimated exhaust gas amount;
And a fourth step of searching for a traveling route in which the estimated exhaust gas amount searched in the third step is reduced. In the second step, a road near the current position and the destination is searched for, and at least one of road slope information, road shape information, and road type information is obtained. In the third step, the obtained information is The route search method according to claim 16, wherein the estimated exhaust gas amount is calculated using the estimated exhaust gas amount. Obtaining vehicle driving operation information by the vehicle driver;
Further comprising a step of classifying each road feature based on the vehicle traveling operation information to acquire a vehicle driving pattern,
17. The route search method according to claim 16, wherein in the third step, an estimated exhaust gas amount is calculated according to the operation pattern. Measuring the actual amount of exhaust gas emitted from the vehicle when the vehicle is traveling;
17. The route search method according to claim 16, further comprising the step of displaying the display form of the travel route separately according to the actual exhaust gas amount. After the fourth step,
17. The route search method according to claim 16, further comprising the step of displaying each travel point on the travel route in a graph in association with the estimated exhaust gas amount calculated in the third step. Measuring the actual amount of exhaust gas emitted from the vehicle when the vehicle is traveling;
17. The route search method according to claim 16, further comprising the step of displaying each travel point on the travel route searched in the fourth step in a graph in association with the actual exhaust gas amount. In a route search system including a route search device mounted on a vehicle and an information management device connected to a plurality of route search devices via a communication line,
Vehicle information, travel route information, and actual exhaust gas amount information emitted when traveling on the travel route are received from a plurality of route search devices, and the vehicle information, travel route information, and actual exhaust gas amount information are associated with each other. An information management device that stores a database that has received the travel route information and the actual exhaust gas amount information corresponding to the vehicle information corresponding to the vehicle from the information management device, and receives the received travel route information and the actual exhaust gas amount information. The estimated exhaust gas amount is calculated by estimating the exhaust gas amount of the predetermined component emitted from the vehicle when traveling on the traveling route from the current position to the destination by using the estimated exhaust gas amount. A route search system comprising: a route search device that searches for a traveling route. The vehicle information is information indicating the class of the vehicle,
The information management device associates vehicle information relating to vehicles of the same vehicle rank with a plurality of travel route information and actual exhaust gas amount information received from the plurality of route search devices mounted on vehicles of the same vehicle rank. Storing a database, transmitting information based on a plurality of traveling route information and actual exhaust gas amount information to the route searching device,
23. The route search system according to claim 22, wherein the route search device presents information based on a plurality of travel route information and actual exhaust gas amount information to a vehicle driver.

Images